PHP Manual
CachingIterator
Return the key for the current element

CachingIterator::key

(PHP 5, PHP 7)

CachingIterator::key — Return the key for the current element

说明

public CachingIterator::key ( void ) : scalar

Warning

本函数还未编写文档，仅有参数列表。

This method may return a key for the current element.

参数

此函数没有参数。

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